class_docstr: Base object for reading mat files
  
  To make this class functional, you will need to override the
  following methods:
  
  matrix_getter_factory   - gives object to fetch next matrix from stream
  guess_byte_order        - guesses file byte order from file
docstr: As we do not know what file type we have, assume native 
docstr_tok: ["As","we","do","not","know","what","file","type","we","have",",","assume","native"]
code: def guess_byte_order(self):
      """As we do not know what file type we have, assume native"""
      return boc.native_code
  
imports: from __future__ import division, print_function, absolute_import
  import sys
  import operator
  from scipy._lib.six import reduce
  import numpy
  from scipy.misc import doccer
  from .None import byteordercodes
label_desc: Use image node_id 3 for calling the MatFileReader obj's underlying member method code with example usage: obj.guess_byte_order() and returns: boc